Factorisation , facteur commun caché A(x) = x(2x-3) + (6x-9)(x+1) B(x) = x(2x-1) + (-8x+4)(x+1) C(x) = (x+2)(x-1) + (1-x)(x+5) D(x) = (3x-1)x-(x+2) (1-3x)
Bonsoir
A= (2x-3)x-(6x-9)(x+1)
A =(2x-3)[ x - 3(x+1)]
A = (2x-3)(-2x-3)
B = x (2x-1)+(-8x+4)(x+1)
B = x (2x-1) +(2x-1)(-4)(x+1)
B = (2x-1)(x-4x-4)
B = (2x-1)(-3x-4)
C =(x+2)(x-1)+(1-x)(x+5)
C =(x+2)(x-1)+ (-1)(x-1)(x+5)
C =(x-1)(x+2-x-5)
C =(x-1)(-3)
D =(3x-1)x -(x+2)(1-3x)
D =(3x-1)x -(x+2)(-1)(3x-1)
D =(3x-1)(x +x -2)
D =(3x-1)(2x-2)
